Aeronautical apparatus.



H. W. SCHMIDT.

AERGNAUTICAL APPARATUS.

APPLICATION FILED senza. 1916A Patented Nov. 6, 1917.

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Figa

Figi

L www la H. W. SCHMIDT.

AERONAUTICAL APPARATUS.

APPLICATION FILED sEPLzs. 191e.

.Patented Nov? 6, 1917.

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H. W. SCHMIDT.

AERONAUTICAL APPARATUS.

APPucATloN FILED sPT.2a.191s.

Patented Nov. 6, 1917.

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HENRY W. SCHMIDT, OF EDGEVATER, NEW' JERSEY.

AERONAUTICAL APPARATUS.

Speccaton of Letters Patent.

Fatented Nov. 6, 1917.

Application tiled September 28, 1916. Serial No. 122,652.

To all 107mm t may concern.' r

Be it known that I, HENRY lV. SCHMIDT, a citizen of the United States, residing at Edgewater` in the county of rBergen and State of New Jersey. have invented certain new and useful Improvements in Aeronautical Api .ratus. of which the following is a specification` reference being had therein to the accompanying drawing.

My invention relates to improvements in aeronautical apparatus and more particularly has reference to means for maintaining constant pressure of gas within the bag of an air-ship such as the dirigible type. It is well known that during the day while the heat of the sun is upon the bag of such an airship that the pressure of the gas upon the bag is increased due to the expansion of the gas under the inliuence of the sun, while at night the gases shrink or contract due to the cooling effect of the surrounding atmosphere and the pressure in the bag is thus very materially reduced. The principal object of my invention is to provide a simple, efficient and practical means for overcoming these changes so that the pressure within the bag can be automatically maintained constant and normal.

In the accompanying drawings I have illustrated in Figure 1. partly broken away, a cross section of the lower part of a dirigible showing an application of my invention. the same being on the line 1 1 of 6. Fig. 2 is an enlarged detail of one of the arms of the device, and Fig. 3 is a cross section on the line 3 3 of Fig. 2. Fig. 4e is a perspective view partly broken away illustrating the position of said arms when the bag is fully inflated and under normal pressure. Fig. 5 shows said arms in their elevated position taking up the slack of said bag after the gases have contracted. and Fig. 6 is a plan View looking down upon the bag illustrating a modified arrangement of the arms and connections therefor.

T indicates the gas bag of a suitable form of dirigible. and S the car or platform suspended therefrom. 9 indicates suitable transverse guides, rails or supports upon which arms such as shown in Figs. 2 and 3 or as shown in Figs. 4 and 5 may be slidably mounted. Referring to Figs. 4- and 5 it will be observed that the arm 10 is pivotally interlocked with the arm 11 by the pin, wire or rod 12 and upon the outer ends of the arms 10-11 may be provided suitable rollers such as 18-13. Also at the outer ends of said arms is provided suitable engaging means such as let-14 to which may be secured ropes or cables such as 15H15. the same being adapted to pass over pulleys or other suitable guides such as 16-16 and having the inner ends connected to a cable such as 17 also adapted to pass over a. pulley such as 18. The pulleys or rollers 13-13 may be mount ed to roll upon suitable guides such as the angles 19.

In the modification shown in Fig. 6 the guides or supports for the arms may be in the form of a rectangular framework such as 20 provided with a cut away portion such as 21 through which the depending tug such as 22 of the arm may project; thus allowing the rollers 23 to ride upon the surfacel of the framework. In the arrangement shown in Fig. 6. the inner end of the arm 241 is pivotally mounted upon the rod 25 and the inner end of the rod 2st is also pivotally mounted upon said bar in the adjacent frame. The outer end of the arm 2st is secured by the end of the cable 2G which passes over the pulley 27, the inner end of said cable 26 being secured to the cable 28 and the cable 29 of the adjacent arm 24 is likewise secured to the cable 2S and the same arrangement is provided at the other end of the dirigible.

30 is a suitable drum adapted to be driven by the motor 31 and upon which the main cable 28 or 17. as the case may be, is wound, and 32 is a suitable pressure gage communicating with the bag 7 by the tube 33 indicating the pressure within said bag and provided with electrical contacts in any suitable and well known manner. so that when the pressure within the bag falls below a predetermined amount the said gage thereby closes the electrical circuit 34- thereupon immediately setting in motion the motor 31 and winding up the drum 3() which thereupon elevates the arms such as 24; or 10-11 with the result that the bag 7 as shown in dotted outline in Fig. 5, is thereby lifted by the ends` of said arms and the rod or cable longitudinally connecting the same and the pressure within said bag is maintained constant. As thel pressure wit-hin the bag increases the gage 32 thereupon reverses the contacts within the circuit 34e thereby allowing the drum 30 to unwind and the arms to fall, suitable provision being made to keep the arms normally sliglitlv above the horizontal so as to prevent a dead center and facilitate the lifting of the same instantly.

0f course it will be understood that various modications may be made Without departing from the spirit of the invention as claimed.

claim:

1. An apparatus of the class described comprising' opposed arms adjacent the surface of an inflated bag, the adjacent ends of said arms piroted together, and means for proj ecting the piroted ends of said arms against said bag.

2. An apparatus of the class descriloedj comprising opposed arms adjacent the surface 0f an inflated bag, tlie adjacent ends of said arms pivotally connected by means eX- tending` substantially the entire length of the main portion of said bag, and means for projecting the pivoted ends of said arms against said bag.

ln testimony whereof l hereunto affix my signature in the presence of two Witnessei.

HENRY W. SCHEHDT.

W'itnesses:

LOUISE ENDERLE, THOMAS O. HiLL.

Copies of this patent may be obtained forfve cents each, by addressing the Commissioner of Patents, Washington, I). C. 

